I am thinking of going from 9 inches to 12 on the 1982 K20. My current set up is. 8in superlift oru 1 inch shackle/shackle flip 4 inch block, normal steering setup. I want to fit 39.5's. I know that I will have to cut fenders because my current 35's rub, but I want that to be minimal cutting. I don't want a body lift. I have only found that Whiplash and Superlift make the springs. Superstiffs are what I have now so, does anybody know anything about Whiplash leafs? I know that their ifs lifts suck. Another option I though of was 52" bds 8" springs up front w/the 56" bds 8" in the rear or 4" bds w/block. Can I leave the front spring mounts where they are and just move the shackle mount back? Of coarse, I will have to go to crossover and had driveshaft, I think the rear shaft will be fine. Should I clock the np208 down? This truck is a DD/trail rider/mud truck, not a crawler. I just want to keep up the the Super Dutys' height and be able to wheel, and be comfortable. I don't need a bunch of guys telling me that I should go with 4 in springs or I will roll over, I don't rockcrawl. I just would like opinions of how to pull it off, pics, and how guys that have actually done it feel about it. Thanks.